Wrench.



C. S. BROWN.

WRENCH. APPLICATION man MAR- 23. 1916.

1,21 8,522. Patented'Mar. 6,

2 SHEETS-SHEET V Wm B W/Z www z,

0,. 3. BROWN.

WRENCH.

APPLICATION FILED MAR-23. I916.

Patented Mar. 6, 1917.

2 SHEETS-SHEET 2.

psi

CHARLEY STANLEY BRONN, OF KENEDY, TEXAS.

Specification of Letters Patent.

WRENCH.

Application filed March 23, 1916. Serial No. 86,264.

primary object of the invention is to con- Stllit't a device of this character which can I be readily inserted in the end of a tube and which, when rotated will eifectually engage with the tube to turn the same.

Another object of the invention is to construct a device of this character wherein the employment of springs or analogous devices is entirely dispensed with and whereby the tool will ratchet to permit of a fresh grip being obtained upon the pipe or tube.

A further object of the invention is to provide a tool of this character with a handle to accommodate various sizes of tube or pipe engaging jaws.

With the above and other objects in view the improvement resides in the construction, combination and arrangement of parts set forth in the following specification and falling within the scope of the appended claims.

In the drawings:

Figure 1 is a perspective view ofa wrench constructed in accordance with the present invention,

:2 is a transverse sectional view approximately on the line 2 2 of Fig. 1,

"Fig". 3 is a longitudinal sectional view approximately on the line 3-3 of Fig. 2,

Fig. i is a sectional view approximately on theline l of Fig. 2,

Fig. 5 is a perspective view of the handle,

Fig. 6 is a similar view of the adjustable sleeve associated with the handle,

Fig. 7 is a perspective view' of the jaw,

Fig. 8 is a similar view approximately on the line 88 of Fig. 7, and

F i g. 9 is a perspective view of the remov able tooth or fulcrum member for the jaw.

The wrench includes a handle 2 which has one of its ends formed with a reduced substantially rectangular extension providing what I shall term a finger and also providing a shoulder between the handle and the finger. The finger 8 has its end provided with a transverse opening which is adapted to receive a pin providing a stop 5, for a purpose which will presently be apparent.

The jaw of the wrench is indicated by the numeral 6 and is provided at one of its ends with a right angularly arranged shank 7. The jaw 6 has its outer and engaging face 8 rounded from one of its corners and the said rounded base is provided with longitudinally arranged teeth 9. The inner and straight face 10 of the jaw, at the outer corner thereof, is formed with an. inwardly eX- tending ang'ularly disposed lipl'Land the shank 7, upon its inner face at its juncture with. the jaw 6 is cut transversely to provide an angular gro ve 12 that isdisp'osed opposite the lip 11.

The jaw 6 is provided with a gripping member which is indicated by the numeral 14;, and which is substantially V-shaped in cross section and is of a length equaling the distance between the lip 11 and the groove 12 of the jaw 6. The gripping member 14 has its ends formed with a V-shaped tongue 1.3-3 which is adapted to be received in the groove of the jaw and the other end of the said gripping member is formed with a groove 15 to receive the lip 11 of the jaw 6. By this arrangement it will be noted that the smooth inner face of the gripping memher 1 1- will rest against the smooth inner face of the jaw 6 and that the said gripping member, while normally held in engagement with the lip and groove of the jaw, is permitted a. lateral movement over the inner face of the said aw'6.

The shank 7 of the jaw 6 is adapted to be arranged: on one of the faces of the finger 3, and to hold the same in such position I provide a sleeve member which is indicated by the numeral 17 and which has its bore of a width approximately equaling the thickness of the finger 3 and: of the shank 7 but of a greater depth than the combined thickness of the said shank and finger. The sleeve has one of its closed faces provided with a threaded aperture 19 to receive the threaded shank of a wing nut 20, the said shank binding upon one of the faces of the finger 8 to cause the sleeve member 17 to move laterally of both the shank and finger and to cause a binding engagement between the shank and finger.

As stated the gripping member 14: is slidable laterally over the smooth face 10 of the jaw 6 and so the distance between the teeth 9 and the apex or tooth of the gripping man-ea llTal. e, 1917.

member 14: may be varied in order to permit of a firm engagement between the teeth of the jaw and the apex or tooth of the gripping member when the device is arranged within the bore of the tubular member. It will be thus apparent that as long as the wrench is turned in one direction, such gripping engagement between the wrench and inner wall or bore of the tube will be effected, but as soon as the wrench is turned in an opposite direction the grip ping member 14: will be moved toward the smooth face 10 of the jaw 6 so that the distance between the tooth of the gripping member and the teeth 9 of the jaw (3 will be decreased and as a consequence the binding or biting effect of the wrench upon the bore of the tube will be discontinued so that the wrench may be readily removed from engagement with the tube. ()ne end of the sleeve 17 is adapted to contact with the shoulder 4 of the handle of the wrench, while the pin 5 prevents the sleeve 1.7 from being disconnected as well as limiting the movement of the said sleeve in an outward direction. It will, of course, be apparent that by adjusting the thumb nut 20 the shank 7 of the jaw 6 may be longitudinally adjusted between the sleeve and finger 3 so that the jaw proper may be positioned in close proximity to the outer end of the sleeve or at a suitable distance away from the said outer end thereof.

Having thus described the invention, what I claim is:

1. In a device for the purpose set forth, a wrench including handle having a reduced extension providing a finger, a jaw having a right-angular shank at one of the ends thereof and the shank of the said jaw adapted to rest upon the finger of the handle, means enveloping the finger and shank and contacting with the finger to bind the shank thereagainst, the jaw having its outer face provided with teeth, and a gripping eleinent associated with the inner face of the jaw and movable laterally over the said face of the jaw.

2. A wrench including a handle having one of its ends provided with a rectangular extension forming a finger, a jaw having its outer face rounded and formed with longitudinally extending teeth, said aw including a right-angular shank which is adapted member arranged upon the inner and smooth face of the jaw.

3. A wrench including a handle having a reduced extension providing a finger, a jaw having its outer face rounded and provided with longitudinally disposed teeth, guiding means upon the inner and straight face of the jaw, a gripping element which is substantially ll-shaped in cross section arranged upon the said inner face of the jaw and co-acting with the guiding means thereof, said jaw including an angular shank which is adapted to rest upon the finger, a sleeve surrounding the shank and finger, a binding element upon the sleeve c0en 'aging with the finger to retain the shank in contact with the finger, and a stop member upon the finger for retaining the sleeve thereon.

4i. In a wrench of the class described, a handle member having a reduced extension providing a finger, a jaw having its outer face rounded and provided with longitudinally extending teeth, said jaw having an angular shank at one of its ends which is adapted to rest on the finger of the handle, the straight and inner face of the jaw at the outer edge thereof having an inturned lip, the shank at its juncture with the said inner face of the jaw having a lateral groove disposed opposite the lip, a gripping member which is substantially V-shaped in cross-section, said gripping member having one of its ends formed with a tongue to engage in the groove of the jaw and its opposite end provided with a groove to receive the lip of the said jaw, a sleeve member arranged to receive the finger and the shank of the jaw, a binding element carried by the gripping member and co-engaging with the finger of the handle, and a removable stop-pin upon the finger for sustaining the sleeve in position.

In testimony whereof I aflix my signature.

0. STANLEY BROWN.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

